In order to keep moisture in your hair, you should deep condition on a weekly basis. If you use a hooded dryer, you should wear a plastic shower cap between 15 to 20 minutes Otherwise you can wear a shower cap for 30 to 45 minutes.
Clarify monthly. If you color or highlight your hair, use hair masques, co-wash, or apply any type of styling products. Then you likely need to clarify your hair. Hair products build up on the hair and every now and then the hair needs to be thoroughly cleansed. So make sure to add this clarifying in to your rotation.
For the curly girls.
Use a t-shirt instead of a towel and pat your hair dry after shampooing. It won't rough up the cuticle and it'll keep your curls in place.